Tag Archives: Optical

Snapshot optical image generation process The snapshot optical generation procedure includes two parts: the digital encoder and the optical generative model. For image generation of MNIST, Fashion-MNIST, Butterflies-100 and Celeb-A, the digital encoder architecture that we selected is a variant of the multi-layer perceptron54, which contained Ld fully connected layers, each of which was followed by a subsequent activation function …

Moitra, P. et al. Programmable wavefront control in the visible spectrum using low-loss chalcogenide phase-change metasurfaces. Adv. Mater. 35, 2205367 (2023). CAS  Google Scholar  Karvounis, A., Gholipour, B., MacDonald, K. F. & Zheludev, N. I. All-dielectric phase-change reconfigurable metasurface. Appl. Phys. Lett. 109, 051103 (2016). Wang, Y. et al. Electrical tuning of phase-change antennas and metasurfaces. Nat. Nanotechnol. 16, 667–672 …

Microscopes have long been scientists’ eyes into the unseen, revealing everything from bustling cells to viruses and nanoscale structures. However, even the most powerful optical microscopes have been limited by a fundamental physical rule known as the diffraction limit, which prevents them from clearly seeing anything smaller than about 200 nanometers—far too large to capture single atoms. This limitation has …

Mars Isn’t as Red as You Think: A Physicist Uncovers the Real Color of the Red Planet—and the Optical Illusion Fooling Us All  Energy Reporters Source link

IN A NUTSHELL 💡 Researchers at Université Laval have developed a groundbreaking optical AI chip that uses light to achieve data transfer speeds of 1,000 gigabits per second. 🔋 The chip is remarkably energy-efficient, consuming only four joules of energy, equivalent to heating one milliliter of water by 1.8 degrees Fahrenheit. 📈 With its ability to transmit massive amounts of …

On July 7, 2025, the European Space Agency (ESA) achieved a groundbreaking feat in space communications by establishing Europe’s first optical communication link with a spacecraft in deep space. This link, created in collaboration with NASA, was made possible through the Deep Space Optical Communications (DSOC) experiment onboard NASA’s Psyche mission, which is currently over 265 million kilometers away from …